Gas-engine.



F. C. AVERY.

GAS ENGINE.

APPLICATION FILED NOV. 10, 1910.

Patentefi Apr. 13, 1915.

2 SHEETS-SHEET 1.

THE NORRIS PETERS (30., PHOm-LITPCL wA-smlvnmm [L Q F. C. AVERY.

GAS ENGINE.

APPLICATION FILED NOV. I0, 1910.

2 SHEETSBHBET 2.

7 INVENTOR WITNESSES IL, 77 I THE NORRIS PETERS c0.. PHOTD-LITHOH wAsH/NcroN. D. C.

Patented. Apr 113, 1915.

FREDERICK C. AVERY, OF CHICAGO, ILLINOIS.

GAS-ENGINE.

Application filed November 10, 1910.

T all whom it may concern:

Be it known that L FREDERICK C. AVERY, a citizen of the United States, and a resident of Chicago, Illinois, have invented a new and useful improvement in Gas-Engines, of which the following is a specification.

vMy invention relates to improvements in that class of gas engines in which the cylinder is vertical but inverted, that is, the cylinder is located below the crank shaft with the combustion chamber at the lower end near the base or foundation of the engine.

The object of my invention is to add to the utility of the gas engine and to provide an engine of more simple, durable and rigid construction, also to produce an engine with the least possible labor by doing away with much of the expensive machine work and I attain this result with a form of construction that will allow many of the usual component parts to be cast in one aggregate whole.

deferring to the accompanying drawings; Figure 1. is a front view of the base, column and top portion of the engine. Fig. 2. is a side view of same. Fig. 3. is a vertical section indicated by dotted lines in Fig. 2. showing the cylinder in position. Fig. 4. is a vertical section of same indicated by dotted lines in Fig. 1. Fig. 5. is a top view with the cover and cap parts removed, showing the crank and cam shaft in place. Fig. 6. is a cross section indicated by dotted lines in Fig. 2. showing the cylinder and its relation to the exhaust and inlet ports. Fig. 7. is a vertical section as indicated by dotted lines in Fig. 2. showing the valve and cam shaft in place. Fig. 8. is a top view of the cover and lid. Fig. 9. is a broken vertical section showing the method of fastening a sleeve inside of the cylinder portion.

Referring to Figs. 3. and 4:. A. is the base portion, the column portion which are cast together, a cylinder portion V. is shown connected with the base portion A. by the wall surrounding the hole P. which leads to the combustion chamber of the cylinder V. The cylinder V. is also connected with the column B. by the wall 0%. Connecting with and cast to the cylinder V. and the column B. is the inlet chest F. and the exhaust chest which is shown in Fig. 6. a crank shaft bearing X. and a cam shaft bearing Y. is also a part of the column B. shown in Figs. 5. and 8.

Specification of Letters Patent.

Patented Apr. 13, ilhilii.

Serial No. 591,729.

Surrounding the cylinder V. and inside of the column wall B. is a water space S. It will be noticed that this water space S. also surrounds the exhaust port H. and the ignitlon opening K. as shown in Figs. 6. and 7. and extend under the cylinder V. shown as S. in Figs. 3. and 4.. The top portion of the column B. together with the wall portion a. and the curved wall 6. form the lower half of a housing for the governor h. the cams c. e. and the gears d. d. The inlet chest F. and the exhaust chest E. communicate with the cylinder V. by a passage T. and are divided from each other by the wall W.

H. is the outlet leading from the exhaust chest E. and G. is the inlet leading to the inlet chest F. each of which is a part of the casting forming the base A. and the column B.

In Fig. 7. I have shown the inlet valve 6.

tted to a common type of valve cage g. while the exhaust valve or. is fitted to the casting. It is plain that either of the two valves may be used with or without a cage. In the larger types of gas engines a cage would be used while in small engines that can be turned upside down without trouble no cage would be needed as the valve could be removed thr ugh the hole Z. which would after he covered with the usual pipe plug. If cages are used they will be held in place by the clamp Vi.

The holes Q. Q. are cored to support the large cores for the water space S. when molding in the foundry, and are afterward plugged. The hole P. is used in molding for a core support for the cylinder core, it also used to support a cutter when the cylinder is bored, but when the engine is finished this hole is also permanently plugged.

It will be noticed that the base A. and the column B. are of a rectangular shape, the column 13. extending forward far enough to inclose the exhaust chest E. and the inlet chest F. leaving a space B. through which the valve stems ab connect with the cams c. e. on the cam shaft N. The rear of the column B. also extends beyond the curved wall 6. far enough to provide for an opening The form of the column 'B. as described together with its base portion A. extending beyond its sides greatly adds to the rigidity water.

The casting of the parts together in the form as shown not only saves labor in maamount of radiating surface and the expan- 'sion of the metal as a whole is more even than if it were built up of jointed parts.

The chamber S. holds the water for cooling without any outside connected. source of supply, but the cooling effect may be increased when required in the larger or multiple types of engines by insertingin the base portion A. tubular members 7 which extend through the water space S. and add to the conduction of the heat from the water.

'C. is the top or cover portion of the engine, X. X. are the caps for the crank shaft bearings, Y. Y. are the caps for the cam shaft bearings asshown in Fig. 8. these caps are an integral part of the cover C.

D. is a swinging lid attached or hinged i to the cover C. Y

O. is a shield or splasher fastened tothe lid D. and shown in Fig. 4:. m. is an oil hole inthe cover C. in which a suitable oil cup may be attached. Oil drips from the oil'hole on. falling in contact with the connecting rod of the engine; much of this oil is thrown 01f by centrifugal force to the walls of the cover C. and drains from there down to the cylinder V. some of this oil is thrown against the splasher or shield O. and drips off to the cylinder V. but if the splasher 0. were removed the oil would be thrown in contact with the lid D. and much of it would run out between the oint of the lid D. and the cover C. and in order to prevent this the splasher or shield O. is provided. The cover C. also forms the upper half of the housing for the gears (Z. (Z. the governor is. and the cams e. a.

Fig. 5. shows a crank shaft I. with geared connection cl. (Z.' to the cam shaft N. the cams e. e. the governor h. together with the gears (Z. cl: are located inside of the walls of the column portion B.

On one end of the cam shaft N. is a spark timer L. located outside of the column walls B. and on the other end of the cam shaft N. and outside of the column walls B. is mounted a pulley J. this pulley travels with the cam shaft N. which is one half of the speed of the crank shaft I. this makes the pulley J. a slow speed pulley as compared with the usual pulley fastened to the fiy wheel of the engine. This pulley J may be used for light work not adapted for the usual fly wheel. pulley.

The fiy wheel should be located on the crank shaft I. outside of the bearings X. X. in the usual way and need not be shown in the drawing .in order to illustrate my invention.

In the larger sizes of engines the column portion 13. and the base portion A. together, would be heavy as compared with the usual cylinder of the same size engine. It is often necessary to rebore cylinders when worn, and for these larger sizes of engines I have provided a sleeve or sub-cylinder which fits the inside of the cylinder portion of my invention. The method of fitting this sleeve or sub-cylinder to the cylinder portion is clearly shown in Fig. 9. is the jointed portion showing the method of fastening together.

lVhile I have shown and described my invention as applied to a single cylinder portion, it is plain that cylinders may be built in multiples and yet the portions shown, cast in one integral whole casting.

lVhat I claim and desire to secure by Letters Patent is:

l. A gas engine comprising an exterior casing the exte ior walls whereof are adapted to form a water-chamber, a flange extending from the inner face of said casing, a cylinder pendent from said flange, inlet and outlet ports in the bottom of said cylinder, passage-ways extending from said ports to the walls of said casing, valve compartments extending from said ports and said flange, a crank-shaft and cam-shaft journaled in said casing above said flange, valves operable by said cam-shaft, and means connecting said valves with said camshaft through said passage-ways.

2. A gas engine comprising an exterior casing the exterior walls whereof are adapted to form a water-chamber, a flange ex tending from the inner face of said casing, a cylinder pendent from said flange, inlet and outlet ports in the bottom of said cylinder, passageways extending from said ports to the walls of said casing, valve compartments extending from said ports and said flange, the walls of said casing, cylinder and ports being integral, a crankshaft and camshaft journaled in said casing above said flange, valves operable by said camshaft, and means connecting said valves with said cam-shaft through said passage-ways.

3. In a gas engine, a hollow body open at the top, a cylinder, an inlet chest, an exhaust chest, all cast in one integral Whole, a crank shaft and a cam shaft mounted on the upper edge of said body and above the cylinder, a cover for said body adapted to hold the crank and cam shaft in place, said cover having an opening therein, a lid covering said opening, said lid When closed forming a part of the cover, and a shield or splasher attached to said lid.

i. In a gas engine, a hollow body adapted to form a Water chamber, a cylinder, an inlet chest, an exhaust chest, all cast in one piece, a crank shaft and a cam shaft having bearings on said body above the cylinder, a cover for said body, geared connection between the crank shaft and the cam shaft and a pulley on said cam shaft outside of the said body and cover.

5. In a gas engine, a hollow body adapted to form an open Water chamber, a cylinder, an inlet chest, an exhaust chest, all cast in one integral Whole, a crank shaft and a cam shaft mounted on said base and operatively connected, a cover on said body adapted to form a housing for the shafts and the gears connecting said shafts, and a driving pulley mounted on said cam shaft.

FREDERIGK O. AVERY.

Witnesses:

F. H. AVERY, M. B. SHELY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, .D. G. 

